Tire-vulcanizing mold



M. L. MUNGER.

TIRE VULCANIZING MOLD.

APPLlfiATION FILED SEPLZZ, 1919.

1 34,629, Patented Mar. 28, 1920.

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TIRE'VULCANIZING MOLD.

APPLICATION FILED SEPT. 22, 1919.

1,334,629. Patented Mar. 23, 1920.

2 SHEETS-SHEET 2. E76 0 J, 12 I 15 IIVITNESYS:

INVENTOR. J/ Mfi W ATTORNEYS STATES PATENT omen.

KEL'iTIN L. HUNGER, OF LINCOLN, NEBRASKA.

rmn-lvnncmizme MOLD.

To all whom it may concern:

Be it known that I, MELVIN L. MUNGER, a citizen of the United States, at present residin at Lincoln, in the county of Lancaster and State of Nebraska, have invented a new and Improved. Tire-Vulcanizing Mold, of

, which the following is a specification.

y present invention has reference to an improved construction of mold or container, in which the tire to'be. vulcanized is held to the desired shape or condition required as it is supported within the vulcanizing apparatus.

My mvention oomprehends a mold or con'-.

tainer for tires, during the process of vulcanizing, ofla simple and Inexpensive construction in which the'cooperative parts are designed for being'readily adjusted to suit the different sizes of tires to be operated on and in which is included an improved means for to its proper shape and under such internal, resilient pressure, whereby to cause it to positively seat and fit within the shell of the mold or container, during vulcanization. 1

p 7 Again, my invention comprehends an imjv proved constructlon of tlre mold or contamer, which may conslst of one or more pieces in whichthe walls ofthe opposing telescopic members-are adapted for collapsible engagement for nesting and for being drawn up under sufiicient compression. for

holding the tire to the desired bent form and for engaging the matrix or rib-like seats formed in the mold as thetire is held under expansion, by the resilient pressure internall thereof. a W ith other objects in view that will hereinafter be mentioned, my invention em bodies,' in a tire moldv or container of the character. stated, certain features of .con-

. struction and novel combination of parts,-

all of which will bestated in the following detailed description, specifically pointed out in the appended claims and lllustrated in the accompanying drawings, in which Figure 1 is a longitudinal section of portion of my improved mold or container,

parts being in side elevation, the several portions thereof being assembled for holding a tire in condition for vulcan'l'zlng.

Fig. 2 is a transversesection thereof taken substantially on the line 2 2 on Fig. 1. I i Fig. 3 is a horizontal plan section-thereof taken on the line 33 on Fig. 1.

t is a detail perspective .tiew of a gages the resilient of a coil 'withmy invention ,and rality of sections.

the meeting ends 10-10to normallg 7 member,

fitting therein, the saidmold may consist of a Specification of Letters Patent. Patented 23, 1920, Application filed September 22, 1919. Serial No. 825.405.

portion of the resser rim or shoe that enfiller for the tire and hereinafter specifically referred to.

Fig. 5 is a detail side view of the resilient filler, the samebeing shown in the nature spring. Fig. 6 is a similar view composed of a pliable sand filled container. Fig. 7 is a diagrammatic side view of a container mold constructed in accordance composed of a plu- -ln the practical a plication of my inven-' tion and in the pre erred'form thereof the main or body portion 1 of the mold is of one piece and of substantial U shape in cross section and the said body is made'up of sheet metal and bent to a circular form, the metal being of sufiicient resiliency to cause close toward each other and to provide r the desired telescopic connection of the said ends, when drawing the mold or container members tightly, around the tire, in the man-,

nerpresently explained, thesaid -meetin ends '1010 are flared so that one will rea ily slip within the other, as is clearly indicated0nF1g.3.

Instead of making the" mold of a single with devices at the meeting ends for drawing the said ends together, when the'mold around a tire to be held number of sections, as diagrammatically shown in Fig. 7, it being understood that, when the mold is of two or more sections, drawin in en s of each of the different sections.

lhe inner surface of the mold, with which the tread face of the rubber tire is held in engagement, when the parts are assembled,

up devices are located at the meet.

of a filler portion is formed with ribs 2-2 and they are ar ranged to permit of telesco icallyconnecting the free ends of themed so as to nest and permit of the desired contraction or expansion adjustments of the mold, the said ribs serving to make the desired imp-ressions on the treadv surface of thetire, when v the tire is held down against the bottom of,

the mold under internal spring pressure applied thereto in the manner presently explained. T 1

At the meeting ends of the mold or container casing, means are provided for drawing the said ends telescopically together, one

of such drawing'up means employed v I .at'each pair of meeting ends of the body, .when the mold or casing ismade of a plu-- of said lugsare .joined by a drawing up or its length and; also allow for the required ends of the mold, I employ a clampin i be applied to the resilient filler throughout.

- annular channel way which the shoe-engag-mgclamp bolts 8 pro- 'jectp r 90 on cross. clamps 9, each of which has.

it being understood that, when 'the'clamp bolts 8 are loosened, owing to-the annular r or drawn together.

'meetingends 1010has externally radially.

' For holding 'the said annu ar resilient filler for the tire under pressure against of the said filler.

the mold is attained, by a filler consisting of an elongated ha of sand, as shown in Fig 7, since the co. and the means for clampin it against the tire filler will so adjust tie sand filler that the tire rubber is held out under the desired pressure ainst the mold base.

While the detailed arrangement of the parts shownand described disclose a practical development of my invention, it is understood that modifications andvariations of the details shown and explained may be readily made without departing from my invention as comes within the scope of the appended claims.

-In myform of tire moldor container, the same may. be readily and quickly adjusted to rality'of sections, as before stated.

Referring nowmore particularly to Flgf. l and 2, it will be observed that each of te projected lugs 33' and. each opposite pair clamping bolt 4, the said bolts passing through apertures 3030 in their respective en aging lugs and have their threaded ends a apted for engagement with clamp-- ing nuts 5,;the tightening of which operates to draw the telescopic ends together and hold the mold around a rubber tire to be vulcanized. To obtain the best desired result when subjecting the tire to the vulcanizing process, it is necessary'that the rubber tire within the mold be positively held to its fully expanded condition with its tread face under positive res'sure against the adjacent inner face of t e mold.

' For such purpose, I provide a filler for the rubber t1re of a resilient body, which body may be a continuous sp 'coil 6 that extends around the full internal length of the tire, as-indicated on Fi .1.

vulcanized and the same, when the parts are assembled for use with the tirecontained placed within the heated sand chamber of any of the modern types. of vulcanizers, for example as shown 1n my atented vulcanizer dated July 29, 1919 0. 1,311,613.

From the foregoin description taken in connection with the rawings, the complete construction or manner of using and the advantages of my present invention will be readily apparentto those familiar with the art'to which my said invention relates.

. What I claim 1. In a tire mold .of the character scribed, a circular casing having a cross sectional shape adapted to securely seat a tire, the said casing including opposing telescov ic ends, means cooperative with the sai ends'for drawing them together, a resilient body for fittin into the tire being worked, and means or circumferentially expanding the said filling, whereby to maintain 'the tire closely seated within and against the mold.

the-base of the mold, an annular shoe .7- is held in engagement with the internal. face. To hold the said shoe 7 under pressure against the resilient filler 6 and throughout contraction and expansion of the meeting means such as is best shown in Figs. 2 an 3, a number of such clamping means being disposed around the internal circumference of the mold so that uniformpressure may,

its length.

By referring now to Figs. 2 and 4:, it will be noticed that the shoe 7 has an internal or groove into scribed, a circular casing havin a cross sectional shape adapted .to secure y seat a tire, the said casing including opposing telescopic ends, means cooperative with the said ends for drawing them together, a re- ;silient body for fitting into the tire being worked, and means for circumferentially exp v. I panding the said filling, whereby to mainq t n e y m y f m h inne tain the tire closely seated within and circumferential :oppos1te edges 151 5 of i t th ld, th id means i l di the mold of-wh1ch theyform! a fixed part, a shoe that engages the internal face of the The. bolts '8 engage threaded nut portions notches 9191 for engaging T heads 12 that ges thesaid shoe.

. In a tlI'OQlIlOld of the character described, a circular casing havin a cross sectional shape adapted to secure y seat a tire, the said casing including opposing telescopic ends, means coiiperative with the said ends for drawing .them together, a resilient bodyfor fitting into the tire being worked, and means'for circumferentially ngtat enga groove 70, the sa1d clamp bolts retain the r. 3 operative connection, relatively with 'the shoe 6, as the ends of the mold are expanded Instead of using a coil. spring that extends continuously around and within the tire, the same conditions, that is holding the tire under pressure against the seat .or base'ofv suit. the particular diameter of tire to be' therein, may be readily andconveniently fillin and clamp screw devices on the cas- 2. In a tire mold of the character deexpanding the said filling, whereby to maintain the tire closely seated within, and

against the mold, the said means including annular shoe portions that engage the internal annular face of the filling, the internal annular face of the shoe having annular guideways, clamp plates ada ted for being placed transversely across t e open inner rim edges of the casing, the said rim edges and their lates having interlocking members, the said plates each havinga screw bearing and clamp screws that engage the screw bearings and the annular guideway on the filler engaging shoe portions.

4:. Means I for being vulcanized, "the said meansincluding a split circular shaped casing of s itable resilient metal, and substantially U- for holding a tire in condition shape in cross section, the adjacent split ends being tapered, whereby to telesco ically interengage, means at the said spit ends for drawing the said ends together, the 'said means including drawing up screws, and screw brackets mounted on and externally of the mold, a filler of resilient material adapted for being inserted into and to be held Within the tire to be vulcanized, means for expanding saidffiller,

whereby to hold the tire seated against the casing, the said means including an annular shoe that engages the inner face ofthe resilient filler and clamp screws mounted on the casing and engaging the filler engaging shoe for the purposes specified.

MELVIN L. MU NGER. 

